2.2237 x 10^4
5 x 10^4
10 with an exponent of -6 = 4
6.213*105
You evaluate the powers of 10 and a exponent of positive 4.
For 104 the base is 10 and the exponent is 4.
The mantissa is multiplied by 10 raised to the power as shown by the exponent. So, if the exponent is 4, then you multiply the mantissa by 10^4 = 10,000. If the exponent is -4 then you multiply the mantissa by 10^(-4) = 0.0001 or, equivalently, divide by 10^4.
20000 using the exponent of 4 = 11.89214fourth root of 20000 = 11.8921
4000000 = 4*106
10 power of 4
5^4
Move 4 decimal places to the right to obtain the exponent of base 10 -4. Therefore, 0.00069 in scientific notation is 6.9 x 10-4